WO2021168992A1 - 柔性显示面板 - Google Patents

柔性显示面板 Download PDF

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Publication number
WO2021168992A1
WO2021168992A1 PCT/CN2020/083082 CN2020083082W WO2021168992A1 WO 2021168992 A1 WO2021168992 A1 WO 2021168992A1 CN 2020083082 W CN2020083082 W CN 2020083082W WO 2021168992 A1 WO2021168992 A1 WO 2021168992A1
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Prior art keywords
layer
inorganic
display panel
pixel unit
flexible display
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PCT/CN2020/083082
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English (en)
French (fr)
Inventor
金江江
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US16/966,035 priority Critical patent/US11903259B2/en
Priority to EP20767708.9A priority patent/EP4113640A4/en
Publication of WO2021168992A1 publication Critical patent/WO2021168992A1/zh
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/879—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/10—Deposition of organic active material
    • H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
    • H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • the present invention relates to the field of display, in particular to a flexible display panel.
  • OLED Organic light-emitting diodes
  • OLED Compared with other display technologies, flexible OLED is easier to achieve flexible display, which is also difficult to achieve by other technologies at present, but OLED also has other defects of its own. For example, because OLED light-emitting materials are currently realized by organic small molecule evaporation process, their life span is long. Unlike liquid crystal displays, the life of OLED is limited by factors such as the material itself, evaporation process conditions, operating voltage and other factors. Therefore, it is necessary to comprehensively consider the efficiency and life of red, green, and blue light-emitting materials to optimize the efficiency and power consumption of light-emitting elements.
  • the present invention provides a flexible display panel whose structure can ensure the maximization of red light and green efficiency, and can also effectively improve the efficiency of blue light, and can simplify the evaporation process and reduce the production cost.
  • the present invention provides a flexible display panel, including an array substrate, an organic light-emitting layer, a cathode layer, a light coupling-out layer, and a thin-film encapsulation layer; the array substrate is provided with an anode layer; the organic light-emitting layer is provided on The anode layer includes a red pixel unit, a green pixel unit, and a blue pixel unit; the cathode layer is disposed on the organic light-emitting layer; the light coupling-out layer is disposed on the cathode layer, and the The red pixel unit and the green pixel unit of the organic light-emitting layer are arranged correspondingly; the thin film encapsulation layer is arranged on the light coupling-out layer, wherein: the blue pixel unit corresponding to the organic light-emitting layer The thin film encapsulation layer is in contact with the cathode layer.
  • the light out-coupling layer is made by evaporation or printing of organic small molecule materials.
  • the thin film encapsulation layer includes a first inorganic barrier layer, an organic barrier layer, and a second inorganic barrier layer; the first inorganic barrier layer is disposed on the light outcoupling layer and corresponds to the blue pixel unit On the cathode layer; the organic barrier layer is provided on the first inorganic barrier layer; the second inorganic barrier layer is provided on the organic barrier layer.
  • the first inorganic barrier layer includes a first inorganic layer and a second inorganic layer; the refractive index of the first inorganic layer is greater than or equal to 1.76 and less than or equal to 2; the second inorganic layer is provided on the first inorganic layer.
  • the water vapor transmission rate of the second inorganic layer is less than 1 ⁇ 10 -4 g/(m 2 ⁇ 24h).
  • the material of the first inorganic layer includes any one of SiNx, SiONx, TiOx or ZnOx.
  • the material of the second inorganic layer includes any one of SiNx, SiONx, SiOx, Al 2 O 3 , TiOx, ZrO 2 or ZnOx.
  • the first inorganic barrier layer further includes a third inorganic layer, which is provided between the first first inorganic layer and the first first inorganic layer, and the refractive index of the third inorganic layer is less than or equal to 1.55.
  • the material of the third inorganic layer includes SiOx, SiONx or organoaluminide.
  • the first inorganic barrier layer further includes a fourth inorganic layer disposed on the second inorganic layer, and the refractive index of the fourth inorganic layer is less than or equal to 1.55.
  • the material of the fourth inorganic layer includes SiOx or SiONx.
  • the advantage of the present invention is to provide a flexible display panel.
  • the power consumption can be reduced and the life of the flexible display panel can be improved.
  • the first inorganic barrier layer completely replaces the light outcoupling layer corresponding to the blue pixel unit, which can ensure the maximization of red and green efficiency, while also effectively improving the efficiency of blue light and simplifying the evaporation process ,reduce manufacturing cost.
  • FIG. 1 is a schematic diagram of the structure of the flexible display panel in the first embodiment
  • FIG. 2 is a schematic diagram of the structure of the thin film encapsulation layer in the first embodiment
  • FIG. 3 is a schematic diagram of the structure of the array substrate in the first embodiment
  • FIG. 4 is a schematic diagram of the structure of the organic light-emitting layer in the first embodiment
  • FIG. 5 is a schematic diagram of the structure of the thin film encapsulation layer in the second embodiment
  • FIG. 6 is a schematic diagram of the structure of the thin film encapsulation layer in the third embodiment.
  • Electron transport layer 25. Electron injection layer, 51. First inorganic barrier layer,
  • red pixel unit 202
  • green pixel unit 203
  • blue pixel unit
  • the "on" or “under” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features. Not in direct contact but through other features between them.
  • the "above”, “above” and “above” of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • a flexible display panel 100 which includes an array substrate 1, an organic light-emitting layer 2, a cathode layer 3, a light coupling-out layer 4, and a thin film encapsulation layer 5;
  • the substrate 1 is provided with an anode layer 111;
  • the organic light-emitting layer 2 is provided on the anode layer 111, and includes a red pixel unit 201, a green pixel unit 202, and a blue pixel unit 203;
  • the cathode layer 3 is provided on the organic The light-emitting layer;
  • the light outcoupling layer 4 is provided on the cathode layer 3, corresponding to the red pixel unit 201 and the green pixel unit 202 of the organic light-emitting layer 2;
  • the thin film encapsulation layer 5 is provided on On the light outcoupling layer 4, the thin film encapsulation layer 5 corresponding to the blue pixel unit 203 of the organic light emitting layer 2 is in contact with the cathode layer
  • the light outcoupling layer 4 is made by evaporation or printing organic small molecule materials.
  • the light outcoupling layer 4 is provided on the cathode layer 3 and is provided only corresponding to the red pixel unit 201 and the green pixel unit 202 of the organic light emitting layer 2, and is not located at a position corresponding to the blue pixel unit 203.
  • the light coupling-out layer 4 is provided.
  • the thin film encapsulation layer 5 includes a first inorganic barrier layer 51, an organic barrier layer 52, and a second inorganic barrier layer 53; the first inorganic barrier layer 51 is provided On the light outcoupling layer 4 and on the cathode layer 3 corresponding to the blue pixel unit 203; the organic barrier layer 52 is provided on the first inorganic barrier layer 51; the second inorganic barrier The layer 53 is provided on the organic barrier layer 52.
  • the first inorganic barrier layer 51 includes a first inorganic layer 511 and a second inorganic layer 512; the refractive index of the first inorganic layer 511 is greater than or equal to 1.76 and less than or equal to 2;
  • the second inorganic layer 512 is provided on the first inorganic layer 511, and the water vapor transmission rate (WVTR) of the second inorganic layer 512 is ⁇ 1 ⁇ 10 -4 g/(m 2 ⁇ 24h) .
  • the first inorganic layer 511 has a high refractive index, which can improve light extraction efficiency.
  • the material of the first inorganic layer 511 includes any one of SiNx, SiONx, TiOx or ZnOx, preferably SiNx.
  • the material of the second inorganic layer 512 includes any one of SiNx, SiONx, SiOx, Al 2 O 3 , TiOx, ZrO 2 or ZnOx, preferably SiONx.
  • the array substrate 11 includes a flexible substrate layer 101, a buffer layer 102, an active layer 103, a first gate insulating layer 104, a first gate layer 105, The second gate insulating layer 106, the second gate layer 107, the interlayer insulating layer 108, the source and drain layers 109, the flat organic layer 110, and the anode layer 111.
  • the material of the flexible substrate layer 101 is polyimide (PI), the buffer layer 102, the first gate insulating layer 104, the second gate insulating layer 106, and the interlayer insulation
  • the layer 108 is formed by stacking inorganic layers such as SiN/SiOx.
  • the active layer 103 is a low-temperature polysilicon layer composed of low-temperature polysilicon.
  • the materials of the first gate layer 105 and the second gate layer 107 include Mo, so
  • the source/drain layer 109 is a laminated structure of Ti/Al/Ti, the material of the flat organic layer 110 includes polyimide, and the anode layer 111 is a laminated structure of ITO/Ag/ITO or IZO/Ag/IZO .
  • the organic light-emitting layer 2 includes a layered hole injection layer 21 (HIL), a hole transport layer 22 (HTL), and an organic light-emitting layer 23 (EML) in order from bottom to top. ), an electron transport layer 24 (ETL) and an electron injection layer 25 (EIL).
  • the cathode layer 3 is provided on the electron injection layer 25.
  • the second embodiment includes all the technical features of the first embodiment.
  • the first inorganic barrier layer 51 in the second embodiment further includes a third inorganic layer 513, Between the first first inorganic layer 511 and the first first inorganic layer 511, the refractive index of the third inorganic layer 513 is less than or equal to 1.55.
  • the material of the third inorganic layer 513 includes SiOx, SiONx or Alucone, preferably SiOx.
  • the third embodiment includes all the technical features of the second embodiment.
  • the difference is that the first inorganic barrier layer 51 in the third embodiment further includes a fourth inorganic layer 514, On the second inorganic layer 512, the refractive index of the fourth inorganic layer 514 is less than or equal to 1.55.
  • the material of the fourth inorganic layer 514 includes SiOx or SiONx, preferably SiONx.
  • the advantage of the present invention is to provide a flexible display panel 100.
  • the power consumption can be reduced and the life of the flexible display panel 100 can be improved.
  • the first inorganic barrier layer 51 of the thin film encapsulation layer 5 completely replaces the light outcoupling layer 4 corresponding to the blue pixel unit 203, which can ensure that the red light and green efficiency are maximized, and can also effectively improve the efficiency of blue light. At the same time, it can simplify the evaporation process and reduce the production cost.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
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  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

一种柔性显示面板(100)，包括阵列基板(1)、有机发光层(2)、阴极层(3)、光耦合输出层(4)以及薄膜封装层(5)；有机发光层(2)包括红色像素单元(201)、绿色像素单元(202)以及蓝色像素单元(203)；光耦合输出层(4)与有机发光层(2)的红色像素单元(201)、绿色像素单元(202)对应设置；其中与有机发光层(2)的蓝色像素单元(203)对应的薄膜封装层(5)与阴极层(3)相接触。

Description

柔性显示面板 技术领域
本发明涉及显示领域，尤其涉及一种柔性显示面板。
 背景技术
有机发光二极管（OLED）具有高对比度、快响应速度、自发光、温度适用范围广等优点，因此目前已经逐渐成为小尺寸显示行业的宠儿，然而随着人们对产品要求的不断提高，这些特点已经不能满足需求，同时液晶显示器和量子点发光二极管技术也在不断进步，这样就给OLED发展带来很多挑战。
相对于其它显示技术，柔性OLED更易实现灵活的显示，这也是其他技术目前很难达到的，但是OLED也有其他自身的缺陷，例如由于OLED发光材料目前采用有机小分子蒸镀工艺实现，其寿命远不如液晶显示，OLED寿命受限于材料本身、蒸镀工艺条件、操作电压等因素，因此需要综合考虑红光、绿光、蓝光发光材料效率和寿命，使发光元件的效率和功耗最优化。
因此，如何提高柔性有机发光二极管显示面板的发光效率并减少功耗是亟需解决的技术问题。
 技术问题
本发明提供一种柔性显示面板，其结构能够确保红光和绿色效率最大化的同时，还可以有效的提高蓝光的效率，同时还可以简化蒸镀制程，降低生产成本。
 技术解决方案
为了解决上述问题，本发明提供一种柔性显示面板，包括阵列基板、有机发光层、阴极层、光耦合输出层以及薄膜封装层；所述阵列基板设有阳极层；所述有机发光层设于所述阳极层上，包括红色像素单元、绿色像素单元以及蓝色像素单元；所述阴极层设于所述有机发光层上；所述光耦合输出层设于所述阴极层上，与所述有机发光层的所述红色像素单元、绿色像素单元对应设置；所述薄膜封装层设于所述光耦合输出层上，其中：与所述有机发光层的所述蓝色像素单元对应的所述薄膜封装层与所述阴极层相接触。
进一步地，所述光耦合输出层通过蒸镀或打印式有机小分子材料的方式制作。
进一步地，所述薄膜封装层包括第一无机阻隔层、有机阻隔层以及第二无机阻隔层；所述第一无机阻隔层设于所述光耦合输出层上和对应所述蓝色像素单元的所述阴极层上；所述有机阻隔层设于所述第一无机阻隔层上；所述第二无机阻隔层设于所述有机阻隔层上。
进一步地，所述第一无机阻隔层包括第一无机层、以及第二无机层；所述第一无机层的折射率大于等于1.76且小于等于2；所述第二无机层设于所述第一无机层上，所述第二无机层的水蒸气透过率<1×10 -4 g/（m 2·24h）。
进一步地，所述第一无机层的材质包括SiNx、SiONx、TiOx或ZnOx中的任意一种。
进一步地，所述第二无机层的材质包括SiNx、SiONx、SiOx、Al 2O 3、TiOx、ZrO 2或ZnOx中的任意一种。
进一步地，所述第一无机阻隔层还包括第三无机层，设于所述第一第一无机层和所述第一第一无机层之间，所述第三无机层的折射率小于等于1.55。
进一步地，所述第三无机层的材质包括SiOx、SiONx或有机铝化物。
进一步地，所述第一无机阻隔层还包括第四无机层，设于所述第二无机层上，所述第四无机层的折射率小于等于1.55。
进一步地，所述第四无机层的材质包括SiOx或SiONx。
 有益效果
本发明的优点在于，提供一种柔性显示面板，通过在对应所述蓝色像素单元位置不设置所述光耦合输出层，能够降低功耗并提升柔性显示面板寿命，并通过所述薄膜封装层的第一无机阻隔层完全取代对应所述蓝色像素单元的所述光耦合输出层可以确保红光和绿色效率最大化的同时，还可以有效的提高蓝光的效率，同时还可以简化蒸镀制程，降低生产成本。
 附图说明
图1为第一实施例中所述柔性显示面板的结构示意图；
图2为第一实施例中所述薄膜封装层的结构示意图；
图3为第一实施例中所述阵列基板的结构示意图；
图4为第一实施例中所述有机发光层的结构示意图；
图5为第二实施例中所述薄膜封装层的结构示意图；
图6为第三实施例中所述薄膜封装层的结构示意图。
附图中部分标识如下：
1、阵列基板，2、有机发光层，3、阴极层，4、光耦合输出层，
5、薄膜封装层，21、空穴注入层，22、空穴传输层，23、有机发光层，
24、电子传输层，25、电子注入层，51、第一无机阻隔层，
52、有机阻隔层，53、第二无机阻隔层，100、柔性显示面板，
101、柔性衬底层，102、缓冲层，103、有源层，104、第一栅极绝缘层，
105、第一栅极层，106、第二栅极绝缘层，107、第二栅极层，
108、层间绝缘层，109、源漏极层，110、平坦有机层，111、阳极层，
201、红色像素单元，202、绿色像素单元，203、蓝色像素单元，
511、第一无机层，512、第二无机层，513、第三无机层，
514、第四无机层。
 本发明的实施方式
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本发明中，相同或相对应的部件用相同的附图标记表示而与图号无关，在说明书全文中，当“第一”、“第二”等措辞可用于描述各种部件时，这些部件不必限于以上措辞。以上措辞仅用于将一个部件与另一部件区分开。
实施例1
请参阅图1所示，本发明第一实施例中提供一种柔性显示面板100，包括阵列基板1、有机发光层2、阴极层3、光耦合输出层4以及薄膜封装层5；所述阵列基板1设有阳极层111；所述有机发光层2设于所述阳极层111上，包括红色像素单元201、绿色像素单元202以及蓝色像素单元203；所述阴极层3设于所述有机发光层上；所述光耦合输出层4设于所述阴极层3上，与所述有机发光层2的所述红色像素单元201、绿色像素单元202对应设置；所述薄膜封装层5设于所述光耦合输出层4上，其中：与所述有机发光层2的所述蓝色像素单元203对应的所述薄膜封装层5与所述阴极层3相接触。
本实施例中，所述光耦合输出层4通过蒸镀或打印式有机小分子材料的方式制作。所述光耦合输出层4设于所述阴极层3上且仅与所述有机发光层2的所述红色像素单元201、绿色像素单元202对应设置，在对应所述蓝色像素单元203位置不设置所述光耦合输出层4。
请参阅图1、图2所示，本实施例中，所述薄膜封装层5包括第一无机阻隔层51、有机阻隔层52以及第二无机阻隔层53；所述第一无机阻隔层51设于所述光耦合输出层4上和对应所述蓝色像素单元203的所述阴极层3上；所述有机阻隔层52设于所述第一无机阻隔层51上；所述第二无机阻隔层53设于所述有机阻隔层52上。
请参阅图2所示，本实施例中，所述第一无机阻隔层51包括第一无机层511、以及第二无机层512；所述第一无机层511的折射率大于等于1.76且小于等于2；所述第二无机层512设于所述第一无机层511上，所述第二无机层512的水蒸气透过率（WVTR）<1×10 -4 g/（m 2·24h）。所述第一无机层511具有高折射率，可以提高出光效率。
本实施例中，所述第一无机层511的材质包括SiNx、SiONx、TiOx或ZnOx中的任意一种，优选为SiNx。
本实施例中，所述第二无机层512的材质包括SiNx、SiONx、SiOx、Al 2O 3、TiOx、ZrO 2或ZnOx中的任意一种，优选为SiONx。
请参阅图3所示，本实施例中，所述阵列基板11包括层叠设置的柔性衬底层101、缓冲层102、有源层103、第一栅极绝缘层104、第一栅极层105、第二栅极绝缘层106、第二栅极层107、层间绝缘层108、源漏极层109、平坦有机层110和阳极层111。其中所述柔性衬底层101的材质为聚酰亚胺类（PI）， 所述缓冲层102、所述第一栅极绝缘层104、所述第二栅极绝缘层106、所述层间绝缘层108由SiN/SiOx等无机层层叠设置，所述有源层103为低温多晶硅构成的低温多晶硅层，所述第一栅极层105及所述第二栅极层107的材料包括Mo，所述源漏极层109为Ti/Al/Ti的层叠结构，所述平坦有机层110的材质包括聚酰亚胺，所述阳极层111为ITO/Ag/ITO或IZO/Ag/IZO的层叠结构。
请参阅图4所示，本实施例中，所述有机发光层2从下至上依次包括层叠设置的空穴注入层21（HIL）、空穴传输层22（HTL）、有机发光层23（EML）、电子传输层24（ETL）以及电子注入层25（EIL），所述阴极层3设于所述电子注入层25上。
实施例2
如图5所示，在第二实施例中包括第一实施例中全部的技术特征，其区别在于，第二实施例中的所述第一无机阻隔层51还包括第三无机层513，设于所述第一第一无机层511和所述第一第一无机层511之间，所述第三无机层513的折射率小于等于1.55。
本实施例中，所述第三无机层513的材质包括SiOx、SiONx或有机铝化物（Alucone），优选为SiOx。通过设置所述第三无机层513可以起到更好的阻隔水氧的作用。
实施例3
如图6所示，在第三实施例中包括第二实施例中全部的技术特征，其区别在于，第三实施例中的所述第一无机阻隔层51还包括第四无机层514，设于所述第二无机层512上，所述第四无机层514的折射率小于等于1.55。
本实施例中，所述第四无机层514的材质包括SiOx或SiONx，优选为SiONx。通过设置所述第四无机层514可以起到更好的阻隔水氧的作用。
本发明的优点在于，提供一种柔性显示面板100，通过在对应所述蓝色像素单元203位置不设置所述光耦合输出层4，能够降低功耗并提升柔性显示面板100寿命，并通过所述薄膜封装层5的第一无机阻隔层51完全取代对应所述蓝色像素单元203的所述光耦合输出层4可以确保红光和绿色效率最大化的同时，还可以有效的提高蓝光的效率，同时还可以简化蒸镀制程，降低生产成本。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (10)

  1. 一种柔性显示面板，其包括：
    阵列基板；
    有机发光层，设于所述阵列基板上，包括红色像素单元、绿色像素单元以及蓝色像素单元；
    阴极层，设于所述有机发光层上；
    光耦合输出层，设于所述阴极层上，与所述有机发光层的所述红色像素单元和绿色像素单元对应设置；以及
    薄膜封装层，设于所述光耦合输出层上，其中：与所述有机发光层的所述蓝色像素单元对应的所述薄膜封装层与所述阴极层相接触。
  2. 根据权利要求1所述的柔性显示面板，其中，所述光耦合输出层通过蒸镀或打印式有机小分子材料的方式制作。
  3. 根据权利要求1所述的柔性显示面板，其中，所述薄膜封装层包括：
    第一无机阻隔层，设于所述光耦合输出层以及与所述蓝色像素单元对应的所述阴极层上；
    有机阻隔层，设于所述第一无机阻隔层上；以及
    第二无机阻隔层，设于所述有机阻隔层上。
  4. 根据权利要求3所述的柔性显示面板，其中，所述第一无机阻隔层包括：
    第一无机层，其折射率大于等于1.76且小于等于2；以及
    第二无机层，设于所述第一无机层上，所述第二无机层的水蒸气透过率<1×10 -4 g/（m 2·24h）。
  5. 根据权利要求4所述的柔性显示面板，其中，所述第一无机层的材质包括SiNx、SiONx、TiOx或ZnOx中的任意一种。
  6. 根据权利要求4所述的柔性显示面板，其中，所述第二无机层的材质包括SiNx、SiONx、SiOx、Al 2O 3、TiOx、ZrO 2或ZnOx中的任意一种。
  7. 根据权利要求4所述的柔性显示面板，其中，所述第一无机阻隔层还包括：
    第三无机层，设于所述第一第一无机层和所述第一第一无机层之间，所述第三无机层的折射率小于等于1.55。
  8. 根据权利要求7所述的柔性显示面板，其中，所述第三无机层的材质包括SiOx、SiONx或有机铝化物。
  9. 根据权利要求4所述的柔性显示面板，其中，所述第一无机阻隔层还包括：
    第四无机层，设于所述第二无机层上，所述第四无机层的折射率小于等于1.55。
  10. 根据权利要求4所述的柔性显示面板，其中，所述第四无机层的材质包括SiOx或SiONx。
PCT/CN2020/083082 2020-02-24 2020-04-02 柔性显示面板 Ceased WO2021168992A1 (zh)

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